Computer Hangs at Start Up 9 out of 10 times

So I had a computer built on a website a few weeks ago and I bought a video card separately on Amazon. Computer runs great when it's on but anytime I reboot, my pc hangs at the Windows start up screen. I removed the video card and have no problems when it's not installed.

I installed my video card into my fiancee's computer and it works great, no start up issues. I install my fiancees video card on my pc and the start up problems persist. It's not the video card. What is the most likely culprit?

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  1. It would help if you can post your specs.
  2. AMD Athlon II 64 X3 455 Triple-Core 3.3GHz Processor AM3

    Asus M5A88-M Socket AM3+/ AMD 880G/ Hybrid CrossFireX/ SATA3&USB3.0/ A&V&GbE/ MATX

    4GB (1 x 4GB) 240-Pin DDR3 1333MHz (PC3 10600) Dual Channel

    SEAGATE / WD 1TB 7200 RPM 32MB CACHE SATA 6.0Gb/s


    Microsoft Windows 7 Home Premium 64-bit
  3. Forgot my video card,

    HIS Radeon 7750
  4. Since your card runs ok until you reboot, and also works in your fiancee's computer, my 1st suspicion would be your PSU.
  5. Thanks. I agree, leaning towards the psu. Anyone else have any input?
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